{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["machine or equipment", "concept or principle", "material", "machanical property", "biomedical"], "input": "Finally , the selection pattern of spectrum feature subset was investigated , before revealing the correlation mechanism of the selected lines spectrum and weld process ."}
{"machine or equipment": [], "concept or principle": ["pattern", "mechanism", "process"], "material": [], "machanical property": [], "biomedical": []}